As the victorious West Indian side sat in the bus shortly after leaving the Shere-e-Bangla Stadium to return to the hotel after the match, fans threw stones, two of which hit the window and broke the glass. Nobody was hurt.

The attacks, although resulting in no injuries, are an embarrassment both to the Bangladesh security forces and government which has spent millions of dollars on player and fans' safety and the sport's governing bodies.

The International Cricket Council (ICC) said it knew about the incident but there had not yet been a complaint by the West Indies board.

"Both buses left the stadium together for the hotel. The police convoy was never halted and both buses reached the hotel safely with no injuries being reported," the ICC spokesman said.

An ICC security adviser was on the bus with the team.

The West Indian team spokesman Philip Spooner said: "A couple of fans threw stones, two hit the window and it just broke. No one was hurt and we are safe.

"The glass didn't shatter. It just broke. They are back in the hotel."   West Indies opener Chris Gayle tweeted from the bus: "Bangladesh stoning our bus!!! Freaking glass Break!!! This is crap, can't believe ... what next bullets!!!!   "This is ridiculous!!! Damn!!! W Cup with so many security an this happen!! Big Joke!!! Trust me I'm not keen here!!! ...

players lay flat!!!"   A Bangladesh police officer said that the fans had thought the bus was carrying the home team.

Security at the tournament in the sometimes volatile region is a particularly big issue in the sport after a gun attack on the Sri Lanka team bus in Lahore in March 2009 leading to the deaths of eight people.

As a result, Bangladesh government diverted money from other departments to safeguard players, officials and fans - with the bulk of the $67 million World Cup budget spent on security.   "I apologize for the incident and I promise that such things will not be allowed to recur," Bangladesh Cricket Board President Mostafa Kamal told reporters.

The mood of a crowd for the match - scene of the opening match on Feb. 19  - had turned sour earlier after their team's inept display.

In a symbolic gesture of their disgust, fans laid out their shoes on the road as the Bangladesh team bus drove through the capital.

Mohammad Moudud, 30, a student of BRAC University, had summed up prevailing feelings earlier: "They (Bangladesh players) still need to learn many things. They have just marred our party and the weekend."   As Shakib's hapless men trooped off with heads kept low, fans tossed almost everything they could get their hands on - caps, placards, logos, even jerseys - to the outfield as a demonstration of their disappointment.

By the time the West Indian openers Gayle and Darren Bravo returned to open the innings before their side went on to complete the formalities of the win, loud boos circulated the stadium, specially revamped for this tournament.

Those jeers were still reverberating after the match as West Indian fast bowler Kemar Roach collected a second Man-of-the-match prize for his three wickets and Shakib tried to explain away his side's performance.

Bangladesh skipper Shakib Al Hasan said his team's nine-wicket rout by the West Indies on Friday was the "worst day" of his career, but insisted his side's campaign was not over.

"We did not play well at all," said Shakib after Bangladesh were shot out for their lowest one-day total of 58 in just 18.5 overs, with the West Indies cantering home in the 13th over of their innings.

"I did not expect that we would play so badly. This has to be the worst day of my career." A sell-out crowd of 25,000 packed into the Sher-e-Bangla stadium saw the day-night match come to an end even before the lights came on, jeering the home team and throwing paper placards on the field to show their disgust.

"I am not surprised they were angry, they have every right to be," said Shakib.

"They expect a lot from us because we have done well over the past few years. But I did not think we were capable of such a defeat.

"Our fans expect us to win games against good teams, especially at home. We just did not play good cricket at all. Nothing went right other than winning the toss." Bangladesh's score was well short of their previous low of 74 against Australia in Darwin in 2008 and was also the fourth lowest total in World Cup history.

They face England, South Africa and the Netherlands in their remaining group matches. But Shakib said Bangladesh were not yet out of the race.

"It is definitely possible to come back," he said. "If you win two out of three matches, we may still qualify. I know it will be hard to come back after losing this game.

"But the boys know they are capable of coming back strongly. They have done it before, so why not this time?"